How random tweaks in timing can lead to new game theory strategies

Most game theory models don’t reflect the relentlessly random timing of the real world. In a new paper, Justin Grana, James Bono, and SFI Professor David Wolpert model what happens when players receive information or act at random times, which could make a big difference in decision-making.

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A new normal: Study explains universal pattern in fossil record

Instead of the typical bell-shaped curve, the fossil record shows a fat-tailed distribution, with extreme, outlier, events occurring with higher-than-expected probability. Using the same mathematical tools that describe stock market crashes, SFI researchers explain the evolutionary dynamics behind this universal pattern in the fossil record and uncover "a new normal."

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Aeon: Life ≠ alive

In their essay for Aeon, External Professor Sara Walker and Professor Michael Lachmann argue that we would do well to understand life as a process of transmitting information.

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In memoriam: Murray Gell-Mann

Murray Gell-Mann, a Nobel laureate who revealed symmetry and order in the world of subatomic particles and leveled his genius at complex mysteries of life and mind, died peacefully May 24, 2019. He was 89 years old.

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Toward a New Understanding of Aging, Adaptation, and the Arrow of Time

While time and age in standard dynamical systems are treated as simple clocks that run at a constant rate, the human experience of age is measured by consequences. In this talk on Tuesday, May 21 at 7:30 p.m., physicist Jean Carlson will illustrate the interplay between biological aging, adaptation, and the arrow of time through examples taken from her research and focus areas of a five-year Santa Fe Institute research theme.

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Group decisions: When more information isn't necessarily better

Modular — or cliquey — group structure isolates the flow of communication between individuals, which might seem counterproductive to survival. But for some animal groups, more information isn't necessarily better, according to new SFI research published in Philosophical Transactions of the Royal Society B.

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